I thought these muffins were way too sweet! You do not need a streusel topping on a muffin that has sweet blueberries in it. It was almost inedible because of the sweetness! Also, never fill a muffin cup more than 3/4 full or it will spill over the edges and cause a huge mess and your muffins will be ruined. I thankfully knew better. Also, I used 12 regular sized muffin cups with paper baking cups and baked 18 min. The muffins were very moist. I used a different streusel recipe and it didn't cause them to sink. It was listed in one of the 5 star reviews as most helpful but this recipe doesn't need any. If I were to make these again I would omit the topping or omit the blueberries.

I made these exactly as the recipe stated except I made my balls of dough about an 1/8th of a cup like several others recommended. I rolled them in sugar and cinnamon and that was too sweet so I tried putting maple syrup on them, yuck. I am also not a banana fan and I thought the banana flavor was overpowering. If I make these again, I will use pureed pears or maybe even crushed pineapple and just sprinkle with powdered sugar. I also think I will try almond milk instead of water.